What powers opensemanticsearch.org?

Last seen Aug 2026 · 10 technologies across 7 categories

CDN

cdnjs
since Dec 2021
Cloudflare
since May 2022

CMS

Drupal
since Sep 2017

Font scripts

Google Font API
since Mar 2022

JavaScript libraries

Highlight.js
since Dec 2021
jQuery v2.1.1
since Sep 2017
Modernizr v2.8.3
since Sep 2017

Programming languages

PHP
since Aug 2018

UI frameworks

ZURB Foundation v5.1.1
since Sep 2017

Web servers

Apache HTTP Server
since Sep 2017

AI Crawlers

Doesn't name any of the 33 AI crawlers we track in its robots.txt. Catch-all rules (User-agent: *) restrict some paths for every crawler, AI or not. Checked Sep 2026.

  • robots.txt found
  • llms.txt not found
  • ai.txt not found

See who blocks each AI crawler across the web

AI Crawlers

No AI crawlers blocked

Full breakdown

Open Page Rank

3.39 / 10 · ranked #1,013,598 of all domains

28 referring domains · OpenPageRank

Infrastructure

  • Hosted on HPLS-AS (185.97.174.61)
  • DNS: schlundtech.de
  • Email: no MX record returned
  • SSL: Let's Encrypt, ECDSA P256, expires Nov 2026
  • Common Crawl link graph: rank 1,968,871, 2 hosts

DNS records as swept Aug 2026, certificate as seen Sep 2026. How the web is hosted

Subdomains

HostTechs
www.opensemanticsearch.org 8
opensemanticsearch.org 7

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